ADS5485IRGC25 - 16-Bit 200MSPS ADC, Buffered Inputs | TI
Référence : ADS5485IRGC25 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $78.42 | $78,42 |
| 10 | $71.3 | $713,00 |
| 100 | $64.55 | $6 455,00 |
| 500 | $58.2 | $29 100,00 |
| 1 000 | $52.18 | $52 180,00 |
ADS5485IRGC25 Présentation
What is a high-speed pipelined ADC? A pipelined analog-to-digital converter is an architecture that processes analog input samples through multiple cascaded low-resolution stages, each stage resolving a portion of the output code before passing the amplified residue to the next stage. This architecture delivers the best combination of speed (tens to hundreds of MSPS) and resolution (12-16 bit) for applications such as test-and-measurement instrumentation, software-defined radio, medical imaging, and radar signal chains. Pipelined ADCs sit within the broader hierarchy of data converter -> ADC -> high-speed ADC -> pipelined ADC -> signal chain IC.
Key features include 200 MSPS guaranteed sample rate, 16-bit resolution, internal input buffer to ease front-end driving, LVDS outputs for low-noise digital signaling, and outstanding spurious-free dynamic range (SFDR) at high input frequencies. The buffered input removes the need for an external high-bandwidth op-amp, simplifying the analog front-end and reducing BOM count.
The architecture uses a switched-capacitor input sampling network followed by multi-bit-per-stage pipelined conversion with proprietary calibration. The wide input bandwidth and high SFDR enable direct IF sampling of signals up to several hundred MHz, which is increasingly used in lieu of analog mixing stages.
Typical applications include high-end test and measurement, software-defined radio receivers, communications base-station digitizers, radar and lidar processing, and medical imaging front-ends such as ultrasound. The pin-compatibility with the slower ADS5484/3/2/1 (200/170/135/105/80 MSPS) lets designers reuse a single PCB layout across multiple product tiers.
When designing with this device, pay close attention to the analog input network: the buffered input presents a fixed input impedance and requires a specific RC network at AINP/AINM to set the input common-mode and bandwidth. Maintain a solid ground plane on the VQFN-EP pad for thermal dissipation, and route LVDS pairs with 100 ohm differential impedance and length matching.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour ADS5485IRGC25 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ADS5485IRGC25 (même facteur de forme et même empreinte) — différant par Input Type, Package, Analog Supply Voltage, Number of Channels, Sample Rate.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ADS5484IRGC25
✅ Remplacement direct✓ En stock
$52.1 / unité
Voir la fiche technique →ADS5483IRGC25
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADS5482IRGC25
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADS5481IRGC25
✅ Remplacement direct✓ En stock
$49.85 / unité
Voir la fiche technique →ADS62P48IRGC25
✅ Remplacement direct✓ En stock
$49.2 / unité
Voir la fiche technique →ADS42JB69IRGC25
✅ Remplacement direct✓ En stock
$53.4 / unité
Voir la fiche technique →ADS5485IRGC25 Valeurs maximales et caractéristiques électriques
| Résolution | 16 bit |
| Sample Rate | 200 MSPS (max) |
| Number of Channels | 1 |
| Architecture | Pipelined |
| Input Type | Buffered (differential) |
| Analog Supply Voltage | 5 V (nominal) |
| Digital Supply Voltage | 3.3 V (nominal) |
| Output Interface | LVDS, parallel |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| Boîtier | 64-pin VQFN (RGC) 9x9 mm with EP |
| Type de montage | Surface Mount |
| Niveau MSL | 3 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
| Family Pin Compatibility | ADS5481/82/83/84/85 (80-200 MSPS) |
Configuration des broches de ADS5485IRGC25
| Broche 1 | AVDD — Analog 5V supply |
| Broche 2 | AVDD — Analog 5V supply |
| Broche 3 | GND — Analog ground |
| Broche 4 | AINP — Differential analog input positive (buffered) |
| Broche 5 | AINM — Differential analog input negative (buffered) |
| Broche 6 | VCM — Common-mode voltage output |
| Broche 7 | GND — Analog ground |
| Broche 8 | AVDD — Analog 5V supply |
| Broche 9 | CLKP — Differential clock input positive |
| Broche 10 | CLKM — Differential clock input negative |
| Broche 11 | GND — Clock ground |
| Broche 12 | DVDD — Digital 3.3V supply |
| Broche 13 | DRVDD — Digital output driver 3.3V supply |
| Broche 14 | DGND — Digital ground |
| Broche 15 | D0_P — LVDS data output bit 0 positive |
| Broche 16 | D0_M — LVDS data output bit 0 negative |
| Broche 17 | D1_P — LVDS data output bit 1 positive |
| Broche 18 | D1_M — LVDS data output bit 1 negative |
| Broche 19 | D2_P — LVDS data output bit 2 positive |
| Broche 20 | D2_M — LVDS data output bit 2 negative |
| Broche 21 | D3_P — LVDS data output bit 3 positive |
| Broche 22 | D3_M — LVDS data output bit 3 negative |
| Broche 23 | D4_P — LVDS data output bit 4 positive |
| Broche 24 | D4_M — LVDS data output bit 4 negative |
| Broche 25 | D5_P — LVDS data output bit 5 positive |
| Broche 26 | D5_M — LVDS data output bit 5 negative |
| Broche 27 | D6_P — LVDS data output bit 6 positive |
| Broche 28 | D6_M — LVDS data output bit 6 negative |
| Broche 29 | D7_P — LVDS data output bit 7 positive |
| Broche 30 | D7_M — LVDS data output bit 7 negative |
| Broche 31 | D8_P — LVDS data output bit 8 positive |
| Broche 32 | D8_M — LVDS data output bit 8 negative |
| Broche 33 | D9_P — LVDS data output bit 9 positive |
| Broche 34 | D9_M — LVDS data output bit 9 negative |
| Broche 35 | D10_P — LVDS data output bit 10 positive |
| Broche 36 | D10_M — LVDS data output bit 10 negative |
| Broche 37 | D11_P — LVDS data output bit 11 positive |
| Broche 38 | D11_M — LVDS data output bit 11 negative |
| Broche 39 | D12_P — LVDS data output bit 12 positive |
| Broche 40 | D12_M — LVDS data output bit 12 negative |
| Broche 41 | D13_P — LVDS data output bit 13 positive |
| Broche 42 | D13_M — LVDS data output bit 13 negative |
| Broche 43 | D14_P — LVDS data output bit 14 positive |
| Broche 44 | D14_M — LVDS data output bit 14 negative |
| Broche 45 | D15_P — LVDS data output bit 15 positive |
| Broche 46 | D15_M — LVDS data output bit 15 negative |
| Broche 47 | DRC_P — LVDS data ready clock positive |
| Broche 48 | DRC_M — LVDS data ready clock negative |
| Broche 49 | OVR_P — LVDS over-range indicator positive |
| Broche 50 | OVR_M — LVDS over-range indicator negative |
| Broche 51 | RESET — Active-low reset (or power-down) |
| Broche 52 | PDN — Active-low power-down |
| Broche 53 | SEN — Serial interface enable |
| Broche 54 | SCLK — Serial interface clock |
| Broche 55 | SDATA — Serial interface data |
| Broche 56 | SDOUT — Serial interface data out |
| Broche 57 | MODE — Operating mode select |
| Broche 58 | AVDD — Analog 5V supply |
| Broche 59 | GND — Analog ground |
| Broche 60 | AVDD — Analog 5V supply |
| Broche 61 | GND — Analog ground |
| Broche 62 | DVDD — Digital 3.3V supply |
| Broche 63 | DGND — Digital ground |
| Broche 64 | BIAS — Bias pin (external decoupling) |
Applications typiques
ADS5485IRGC25 convient pour 6 applications: Test & Measurement Instrumentation, Software Defined Radio (SDR), Communications Base Station Digitizer, Radar & Lidar Signal Processing, Medical Ultrasound Imaging, Industrial Data Acquisition.
Test & Measurement Instrumentation
The ADS5485IRGC25 suits wide-bandwidth oscilloscope and spectrum-analyzer front-ends where 16-bit resolution and 200 MSPS sample rate enable direct digitization of signals up to ~100 MHz without aliasing. Its buffered differential input simplifies the analog front-end by eliminating the need for an external high-bandwidth op-amp, reducing BOM and layout complexity. The LVDS parallel output keeps digital switching noise low, which is critical when capturing small analog signals. Designers using this part in digitizers benefit from the high SFDR at high input frequencies, allowing accurate capture of multi-tone test waveforms without spurious artifacts. Compared with slower ADCs, the 200 MSPS rate provides oversampling headroom for digital down-conversion.
Recommandé
Software Defined Radio (SDR)
The ADS5485IRGC25's 16-bit resolution and 200 MSPS sample rate make it well suited to SDR receivers that digitize intermediate-frequency (IF) signals up to several hundred MHz directly, replacing analog mixing stages. The buffered input handles the wide-bandwidth IF signals from RF front-ends, while the LVDS outputs keep digital emissions low to avoid coupling back into the RF chain. The pin-compatible ADS548x family allows designers to offer 80/105/135/170/200 MSPS variants on a single PCB layout, addressing different market tiers. Compared with a 14-bit alternative, the extra 2 bits of resolution translate directly into a larger dynamic range for capturing weak signals alongside strong interferers.
Recommandé
Communications Base Station Digitizer
The ADS5485IRGC25 is suitable for digitizing the IF outputs of multi-carrier GSM/UMTS/LTE base-station receivers, where 16-bit linearity and high SFDR are required to resolve small carriers in the presence of large blocking signals. The 200 MSPS rate supports wide observation bandwidths suitable for multi-channel carrier aggregation receivers. The buffered differential inputs ease PCB routing by accepting single-ended-to-differential conversion upstream without loading the ADC sample-and-hold. Compared with lower-speed ADCs, this part provides the oversampling margin needed for digital filtering and decimation in the FPGA or DSP downstream. The 5 V analog / 3.3 V digital supplies are common in telecom hardware, simplifying power-tree design.
Recommandé
Radar & Lidar Signal Processing
The ADS5485IRGC25's 200 MSPS sample rate and 16-bit resolution support wide-bandwidth radar return digitization in ground-based and airborne radar front-ends, including synthetic aperture radar (SAR) and phased-array receivers. The buffered differential input allows direct connection to a low-noise amplifier or filter network without external buffers, simplifying the analog chain. The high SFDR preserves the dynamic range needed to detect small targets in the presence of clutter and large nearby returns. Compared with 12 or 14-bit ADCs, the 16-bit core provides the additional dynamic range required for high-clutter environments, while the LVDS outputs minimize digital coupling into the RF front-end.
Recommandé
Medical Ultrasound Imaging
The ADS5485IRGC25 enables digital beamforming in mid-to-high-end ultrasound systems where each channel must digitize RF signals up to ~50-100 MHz with high dynamic range. The 16-bit resolution and high SFDR allow detection of small echoes from deep tissue without saturating on large surface reflections. The buffered input simplifies the front-end by accepting the output of the time-gain-compensation (TGC) amplifier directly, and the LVDS outputs transport data to the beamformer FPGA with minimal EMI. The pin-compatible family lets designers reuse a single PCB for 16-channel modules that span a range of probe-center frequencies. The 5 V/3.3 V supplies are easy to derive from the isolated medical-grade power rails typical in ultrasound carts.
Recommandé
Industrial Data Acquisition
The ADS5485IRGC25 fits high-channel-count industrial data-acquisition systems such as vibration monitoring on rotating machinery, where the 200 MSPS rate captures fast transient signatures while the 16-bit resolution preserves amplitude accuracy for spectral analysis. The buffered input accommodates the long cable runs and varied source impedances typical of industrial sensor networks. Industrial temperature grade (-40C to +85C) matches the harsher environments of factory floors, motor-control cabinets, and outdoor enclosures. Compared with audio-bandwidth ADCs, the 200 MSPS rate provides massive oversampling that lets DSP algorithms implement sharp anti-alias filters and high-resolution FFT analysis. The LVDS outputs keep emissions low in electrically noisy industrial settings.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ADS5485IRGC25 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ADS5484IRGC25 | ADS5483IRGC25 | ADS5482IRGC25 | ADS5481IRGC25 | ADS62P48IRGC25 | ADS42JB69IRGC25 |
|---|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-64 (RGC) 9x9 mm | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 14 bit | 16 bit |
| Sample Rate (max) | 200 MSPS | 170 MSPS | 135 MSPS | 105 MSPS | 80 MSPS | 210 MSPS | 250 MSPS |
| Output Interface | LVDS, parallel | LVDS, parallel | LVDS, parallel | LVDS, parallel | LVDS, parallel | LVDS, parallel | JESD204B |
| Analog Supply | 5 V | 5 V | 5 V | 5 V | 5 V | 3.3 V | 1.8 V / 3.3 V |
| Input Type | Buffered differential | Buffered differential | Buffered differential | Buffered differential | Buffered differential | Buffered differential | Buffered differential |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Pin-Compatible Upgrade Path | This part | Down-grade to 170 MSPS | Down-grade to 135 MSPS | Down-grade to 105 MSPS | Down-grade to 80 MSPS | Down-grade to 14-bit, 210 MSPS | Upgrade to 250 MSPS, JESD204B (interface change) |
Principaux différenciateurs
- Highest sample rate in the pin-compatible ADS548x family (vs ADS5484IRGC25)
- 16-bit resolution vs lower-bit alternatives (vs ADS62P48IRGC25)
- LVDS parallel output preserves classic interface compatibility (vs ADS42JB69IRGC25)
Notes de conception
Use a star-ground topology with separate analog and digital ground planes joined only at the ADC's AGND/DGND pins. Place the analog input RC network (typically 50 ohm series, 10 pF differential) within 5 mm of the AINP/AINM pins to limit common-mode kickback from the internal input buffer and preserve SFDR at high input frequencies.
Route the LVDS data pairs (D0..D15) and DRC clock over 100 ohm differential microstrip with intra-pair length matching of better than 1 mm. Keep total length under 150 mm to avoid excessive ISI at 200 MSPS. Use series 100 ohm termination at the FPGA/ASIC end, not at the ADC end, to prevent reflections.
Decouple AVDD with a 10 uF bulk plus 100 nF and 10 nF ceramics placed as close as possible to each AVDD pin. DVDD and DRVDD require similar treatment; do not share decoupling capacitors between analog and digital rails. A ferrite bead between AVDD and DRVDD planes helps isolate digital switching noise from the analog front-end.
The VQFN-64 (RGC) 9x9 mm package exposes the thermal pad (pin 65, not numbered on the package outline) which must be soldered to a continuous ground plane with at least 16 thermal vias on a 1.2 mm pitch. This achieves the datasheet thermal resistance and prevents the die from exceeding 125 C junction temperature at the maximum sample rate and full-scale input.
Do not operate the ADS5485IRGC25 above 200 MSPS; the family is pin-compatible but the 170/135/105/80 MSPS parts will not function correctly at 200 MSPS and may produce degraded SFDR. Always check the speed-grade suffix and the speed-grade register value after reset to confirm the device initialized correctly before starting data acquisition.
Informations de conformité
RoHS compliant per TI product page (verified Oct 2026). Industrial temperature grade, not automotive qualified - no AEC-Q100 variants in the ADS5485 family. MSL Level 3 per JEDEC J-STD-020.
